Screw closure



May 29, 1945. g, 2,376,909

scnmw CLOSURE 1 Filed Sept. 28, 1942 Y INVENTOR. 1

Joagojz C. For

Patented May 29, 1945 SCREW CLQSURE Joseph C. Ford, Madison, .assignor tp llfl e Celon Company, Madison, Wis., a corporation of Wisconsin Application September 28, 1942, Serial No. 459,924

2 Claims. (01. 21531) This invention relates to a screw closure for a container such as a bottle, jar or the like having a threaded neck, especially ofglass or other material of fragile character, or not susceptible of dependable adjustment in threaded relationship.

It has long been difficult in practice satisfactorily to secure a screw closure of glass and similar substances upon a container in airtight relation, due to the risk of breakage, defects of molds, inaccuracies in manufacture, and the like. Washers, fillers, gaskets and similar devices have either failed to remedy the difficulty for various reasons, or have been too expensive or troublesome. Materials, including metal caps, cork, and the like, formerly in use, also have become scarce or unavailable.

While screw closures have been used for some purposes, such as on salt containers and the like, the use of them in connection with containers for wine and-other liquids intended for human consumption has not been satisfactory due to leakage because of inability to obtain a tight, secure closure, a slight jar often causing the closure to become loose. Then, too, because of the fragile character of glass, in adjusting the screw closure to effect a tight closure, breakage often occurs endangering the consumer or entailing wastage of contents.

An object of the invention is to provide safe,

simple, efficient and inexpensive means of securing a tight closure-for containers-designed for use with a closure of threaded or screw type, and to extend the use of such a closure in the packaging or bottling of wines, perfumes and other materials requiring a dependable airtight, resilient, and moistureproof closure. This is accomplished in the present invention by shrinking a band of hydrated regenerated cellulosic material, such as that shown in United States Letters Patent to John Einar Olson, No. 2,041,143, dated May 19, 1936, by drying .over the male threaded member and threading the female member therethe invention will become apparent from the description thereof which follows.

This invention further resides in the combination, construction and arrangement of parts illusthe invention,

upon. A tight, secure, resilient closure may thus be obtained suitable for use in the packaging or bottling of wines and other substances of aromatic or volatile or hygroscopic character, and greatly reducing hazards incident to the use of screw closures heretofore. The band of cellulosic material not only assumes the form of the male threaded member upon which it is shrunk and tightly grips it, providing a gasket between it and the female member, but affords a resilient means. upon which the female member may be tightened with relatively little risk of breakage. Additional objects, advantages and capabilities inherent-in trated in the accompanying drawing, and while there is shown therein preferred embodiments of.

it is to be understood that the same are susceptible of modification and change without departing from the spirit of the invention.

In the drawing:

Fig. 1 is a side elevation of the neck of a container having a band of hydrated material in place thereon .prior to shrinking;

Fig. 2 is a vertical section of the neck of a container with a band of hydrated cellulosic material shrunk in place as the result of drying and ready to receive a screw'closure; and

Fig. 3 is a vertical section of the neck of a container with a screw closure employing the invention in' place.

The particular embodiment of the invention shown in the drawing for the purpose of illustrating the invention, may be described as follows:

3 is slipped over the threaded portion 2 in position tobe shrunk, as shown in Fig. 1, and allowed 6 of neutral material and adapted to rest or be pressed upon lip 'I of the container neck, if desired, is then screwedin place to form an" efiective, resilient, sealing closure, which will prevent evaporation and leakage of contents, exclude ambient atmosphere and greatly reducebreakage and. other hazards incident to the use of screw closures heretofore.

Changes may be made in the form, construetion and arrangement of the parts without departing from the spirit of the invention, and the right is hereby reserved to make all such changes. as fairly fall within the scope of the following claims. I

The invention is hereby claimed as follows:

1. A glass bottle or like receptacle having a neck portion and an opening in the neck portion, a glass closure forthe opening and having a closure top with a downwardly extending integral skirt to overlie the neck and. extend downwardly a predetermined distance below the opening in the neck, interengaging means on the inside of the glass closure and exteriorly of the glass neck whereby the closure may be secured to the neck,

Container neck I. has a peripheral threaded portion 2. Hydrated regenerated cellulosic band and a band of resilient material shrunk about the neck and conforming with the contour there-; of an'dthe means on the neck to form a resilient: cushion between the said interen'gaging means on, the neck and skirt to prevent breakage when the glass closure is applied to said neck and to provide a tight seal between the glass closure and V the glass receptacle.

the neck, integral screw thread means exteriorly of the neck adjacent the opening, a band of regenerated cellulose material shrunk about the neck, overlying the screw thread'means and conforming with the contour thereof, and integral glass screw thread means on the inside of the closure skirt and having engagement with the material overlying the thread means on the neck whereby a cushion is provided between the glass threads on the neck and skirt to prevent breakage of the glass and to form a tight seal when the closure is screwed on the neck.

JOSEPH 0. FORD. 

